SSL: include <openssl/hmac.h>. This header carries the definition of HMAC_Init_ex(). In OpenSSL this header is included by <openssl/ssl.h>, but it's not so in BoringSSL. It's probably a good idea to explicitly include this header anyway, regardless of whether it's included by other headers or not.

make -f misc/GNUmakefile release

the required tools:
*) xsltproc to build CHANGES,
*) xslscript.pl ( http://hg.nginx.org/xslscript ) to build XSLTs
   from XSLScript sources.


make -f misc/GNUmakefile icons

the required tool:
*) netpbm to create Win32 icons from xpm sources.